# SDR CALA2016031100159

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2016
- Submitted: March 11, 2016
- Operation: Air carrier
- Aircraft: [N21723](https://openairdocs.org/aircraft/N21723), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28790
- Aircraft time: 55,852 hours, 19,032 cycles
- System (JASC): [5250 · Fixed Inner Doors](https://openairdocs.org/jasc/5250)
- Part: Control Box
- Part number: OYX1600A04G01
- Part serial: 0391
- Condition: Failed
- Location: Cockpit Door
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016031100159

## Discrepancy

FLIGHT DECK DOOR FAILED TO REMAIN LOCKED IN FLIGHT.  FOUND ELEC CONTROL BOX FAILED.  REPLACED THE SAME IAW TASK 52-52- 02-800-801C12.  OPERATIONS CHECKED NORMAL.

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